package com.guw.TestThread;

//测试:生产者消费者模型--->利用缓冲区解决:管程法
//需要生产者,消费者,产品,缓冲区
public class TestPC {
    public static void main(String[] args) {
        Syncontainer container = new Syncontainer();

        new Productor(container).start();
        new Consumer(container).start();
    }
}

//生产者
class Productor extends Thread {
    Syncontainer container;

    public Productor(Syncontainer container) {
        this.container = container;
    }

    //生产
    @Override
    public void run() {
        for (int i = 0; i < 100; i++) {
            container.push(new Product(i));
            System.out.println("生产了" + i + "只鸡");
        }
    }
}

//消费者
class Consumer extends Thread {
    Syncontainer container;

    public Consumer(Syncontainer container) {
        this.container = container;
    }

    //消费
    @Override
    public void run() {
        for (int i = 0; i < 100; i++) {
            System.out.println("消费了--->" + container.pop().id + "只鸡");
        }
    }
}

//产品
class Product {
    int id;

    public Product(int id) {
        this.id = id;
    }
}

//缓冲区,类似仓库
class Syncontainer {
    //创建容器,设置大小
    Product[] products = new Product[10];
    //容器计数器
    int count = 0;

    //生产者放入产品
    public synchronized void push(Product product) {
        //如果容器满了,就需要等待消费者消费
        if (count == products.length ) {
            //通知消费者消费,生产者等待
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        //如果没有满,就需要放入产品
        products[count] = product;
        count++;
        //然后通知消费者消费了
        this.notifyAll();
    }

    //消费者消费产品
    public synchronized Product pop() {
        //判断能否消费
        if (count == 0) {
            //通知生产者生产,消费者等待
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        //如果可以消费
        count--;
        Product product = products[count];
        //吃完了,通知生产者生产
        this.notifyAll();
        //返回一个产品
        return product;
    }
}
